The Nymphalidae is a family of about 5,000 species of butterflies which are distributed throughout most of the world. These are usually medium sized to large butterflies. Many species are brightly colored and they include popular species such as the emperor, admirals, tortoiseshells and fritillaries. However, the underwings are dull and in some species look remarkably like dead leaves, or are much paler, producing a cryptic effect that helps the butterfly disappear into its surroundings.
The text above is from Wikipedia, the free encyclopedia and is licensed under the GFDL.